What are the differences between std::lock and std::unique_lock?

Can you explain the differences between std::lock and std::unique_lock in C++?

Sure! std::lock is used to lock multiple mutexes at once to avoid deadlocks, while std::unique_lock is a more flexible lock that can manage a single mutex.

What are the advantages of using std::unique_lock over std::lock?

std::unique_lock provides more features, such as deferred locking, timed locking, and the ability to unlock and relock the mutex.

Are there any performance differences between the two?

Yes, std::lock can be more efficient for locking multiple mutexes simultaneously, while std::unique_lock may introduce some overhead due to its additional features.

When should I use std::lock instead of std::unique_lock?

Use std::lock when you need to lock multiple mutexes at once to prevent deadlocks. Use std::unique_lock for single mutex management with more control.